Los Angeles, California. Promotes an interest in family history particularly relating to British Isles ancestry including those from England, Ireland, Scotland, Wales, the Channel Islands, & the Isle of Man.

Located in London, England, U.K. The world's leading organisation for one-name studies. A one-name study is a project researching facts about a surname and all the people who have held it, as opposed to a particular pedigree (the ancestors of one person) or descendancy (the descendants of one person or couple).